| go2-web | Rhineland-Palatinate |
| GO4Q | Baden-Württemberg |
| GO7 AG | |
| Goal Games | |
| Goalhunter | North Rhine-Westphalia |
| Goalscape Software GmbH | |
| Göbel + Lenze Direktmarketing GmbH | Bavaria |
| Gocept GmbH & Co. KG | Saxony-Anhalt |
| GOENOMICS GmbH | |
| Goens Grafik | Bremen |
| GoertzConsult GmbH | |
| Goethe Unibator | Hesse |
| Goethe Universität Frankfurt a.M. - Institut für Informatik | Hesse |
| Goethe University Frankfurt | Hesse |
| Goethe-Institut | |
| Goethe-Universität Frankfurt | |
| Goethe-Universität Frankfurt am Main - Fachbereich 12 - Informatik und Mathematik | Hesse |
| Goggo Network | |
| gogolok OM | |
| Goldener Westen GmbH | |
| Goldland Media GmbH | |
| Golem Media GmbH | Berlin |
| Golem Web Design | |
| Goneo Internet GmbH | Hamburg |
| Good Brands AG | |
| GoodBytz | |
| Goodcarbon GmbH | |
| Goodgame Studios | |
| Goodgame Studios - Altigi GmbH | Hamburg |
| Goodly-Innovations GmbH | |
| GoodSpaces GmbH | |
| Goolux | Brandenburg |
| GÖPEL Electronic GmbH | Thuringia |
| Gordon Adams | Berlin |
| Gorges-Design | Saarland |
| Göring GmbH | Bavaria |
| Goserver GmbH | |
| Göthel Software e.K. | Bremen |
| Gotomaxx Software GmbH | Rhineland-Palatinate |
| Göttert Software | Hesse |
| Gottschild GmbH | Hesse |
| GovConnect GmbH | |
| GovData | Berlin |
| GOVECS AG | |
| Governikus GmbH & Co. KG | |
| Govinet | |
| GovMind GmbH | |
| GovRadar GmbH | |
| GovTech Gruppe | |
| GP Solutions GmbH | |